Title page for ETD etd-03212006-151653

Diatheses to Depression: The Interactions of Schema Propositions, Schema Structure, and Negative Life Events

Degree

PhD

Department

Psychology

Advisory Committee

Advisor Name

Title

Clum, George A. Jr.

Committee Chair

Bell, Martha Ann

Committee Member

Cooper, Lee D.

Committee Member

Scarpa-Friedman, Angela

Committee Member

Winett, Richard A.

Committee Member

Keywords

Life Events

Self-Complexity

Dysfunctional Attitudes

Depression

Schemas

Date of Defense

2006-03-13

Availability

unrestricted

Abstract

Drawing from the meta-construct model of cognition (Ingram, 1984; Ingram & Kendall, 1986), the goal of the present study was to examine whether the structural (i.e., self-complexity; SC, Linville, 1985) and propositional components of schemas (dysfunctional attitudes; DAS, Weissman & Beck, 1978), independently and in interaction with each other and stressors, lead to changes in depressive symptoms. The prediction was that if negative self-attributes across different self-aspects in a specific domain, interpersonal or achievement, are highly distinct (i.e., high negative SC) or if positive self-attributes across different aspects of self are redundant (i.e., low positive SC), then the DAS would be more likely to lead to higher levels of depression when domain-congruent stressors occur. To test the main effect, two-way interaction, and three-way interaction hypotheses, the present study used a two month longitudinal design involving three assessment periods, separated by one month. At the baseline, a total of 189 students participated in the study. Of these students, 163 and 121 students participated in the first and second follow-ups, respectively. Multiple hierarchical regression analyses were used to examine two-way and three-way interactions. Results showed strong support for the predictive power of negative SC with respect to depressive symptomatology. The DAS, on the contrary, was a concurrent factor related to depressive symptoms. Further, the present study did not provide supportive evidence for the diathesis-stress model of depression. Although contradicting expectations, the pattern of relationships between interpersonal negative SC, DAS, distal stressors suggested promising venues for future research.